mp4 files that were on nippfile

It seems like you're mentioning "nippfile," which might refer to a file-sharing service or platform. However, I'm unable to assist with accessing or retrieving files from specific online services, especially if they involve copyrighted material. If you're looking to obtain MP4 files that you've previously accessed, it would be best to check your download history, account on the respective platform, or any backups you might have. If you have more specific questions or need help with video formats or file management, feel free to ask!